Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Como era o tamanho da multidão no local do Junction Oval?
 ###Tabelas: CREATE TABLE national_league_two_table (national_league_two_table_id AUTO_INCREMENT PRIMARY KEY, Position INT, Club VARCHAR, Played INT, Won INT, Drawn INT, Lost INT, Pts For INT, Pts Agst INT, Bonus Points INT, Points INT) CREATE TABLE goalkeeping_leaders (goalkeeping_leaders_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Club VARCHAR, Games Played INT, Minutes INT, Goals Against INT, GA Average INT, Wins INT, Loses INT) CREATE TABLE television_soundtracks (television_soundtracks_id AUTO_INCREMENT PRIMARY KEY, Story # INT, Title VARCHAR, Doctor VARCHAR, Narrator VARCHAR, Format VARCHAR, release date VARCHAR, Notes VARCHAR) CREATE TABLE round_21 (round_21_id AUTO_INCREMENT PRIMARY KEY, Home team VARCHAR, Home team score VARCHAR, Away team VARCHAR, Away team score VARCHAR, Venue VARCHAR, Crowd INT, Date VARCHAR) CREATE TABLE current_bands (current_bands_id AUTO_INCREMENT PRIMARY KEY, Band VARCHAR, Value VARCHAR, Ratio VARCHAR, Ratio as % VARCHAR, Average VARCHAR)  
SELECT SUM Crowd FROM round_21 WHERE Venue = junction oval